Storage battery management device, method, and computer program product

US20160276846A1Active Publication Date: 2016-09-22KK TOSHIBA
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Patent Information

Authority / Receiving Office
US · United States
Current Assignee / Owner
Publication Date
2016-09-22

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Abstract

A storage battery management device manages a plurality of battery units in a storage battery system including the battery units having a plurality of battery cells and a power adjustment device connected to the battery units via respective contactors and connected to a main circuit. The storage battery management device includes a minimum value determination unit and a controller. The minimum value determination unit, from the battery units in which a difference between a maximum cell voltage and a minimum cell voltage of the battery cells forming each of the battery units is equal to or less than a certain value, determines a minimum value of the minimum cell voltage. The controller controls a cell balance process of the battery unit managed by itself, by using the minimum value of the minimum cell voltage determined by the minimum value determination unit as a cell balance target voltage.
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Description

FIELD

[0001] An embodiment of the present invention relates to a storage battery management device, a method, and a computer program.BACKGROUND

[0002] In recent years, safe and clean natural energy such as solar power generation and wind power generation has been introduced. However, the output of natural energy is not stable, and the mass introduction may negatively affect the voltage and frequency of power systems. If the supply of natural energy largely exceeds the power demand, the natural energy power generation systems need to be stopped, resulting in reduced utilization of power generation facilities.

[0003] To solve such problems, a large-scale storage battery system using secondary batteries is added to the power generation systems, and is expected to prevent output fluctuations of the natural energy by charging / discharging power to and from the storage batteries, and to store surplus power in the storage batteries.CITATION LISTPatent Literature

[0004] Patent Literature 1: Japanese...

Examples

Embodiment Construction

[0018]An embodiment will now be described with reference to the accompanying drawings.

[0019]FIG. 1 is a schematic configuration diagram of a natural energy power generation system including a plurality of storage battery systems.

[0020]A natural energy power generation system 100 includes: a natural energy power generation unit 1 that functions as a power system, uses natural energy (renewable energy) such as solar light, hydraulic power, wind power, biomass, and geothermal, and is capable of outputting the energy as system power; a power meter 2 that measures the power generated by the natural energy power generation unit 1; a plurality of storage battery systems 3 that charge surplus power and discharge deficient power of the natural energy power generation unit 1 based on the measurement results by an anemometer and the power meter 2, and output the resulting power including superimposition of the charged or discharged power on the power generated by the natural energy power gener...